(07) 5630 2553im in qldjust wondering if any one knows why they would call as its a missed call

i have had this call on my home phone and on my mobile.  my home number is silent, so spam calls annoy me.  My mobile just rang about half an hour ago.  i missed the call and got a voice message of silence.  when i called back got a weird engaged signal.

we are with telstra, so it's not just 3.

I got called at 8.32pm tonight but missed it, and i have called back twice, and it didnt work, i found it strange being in Sydney getting an 07 number, lucky i googled it, now i wont pick up if get it again!Bloddy 3, im out of there wen my contract is up!

ok, so i just got a missed call from this number, but here's the thing, my phone number is a new number. i got it about 2 weeks ago. and no company or anything should have it. only my friends have this number.so i fully dont know how they got it.im with 3 by the way.you have to wonder how they got it.

ok, so i just got a missed call from this number, but here's the thing, my phone number is a new number. i got it about 2 weeks ago. and no company or anything should have it. only my friends have this number.
so i fully dont know how they got it.
im with 3 by the way.
you have to wonder how they got it.

Got the call at 3.30pm sydney time. Didn't answer as it was a number i didn't know. Googled it and here i am.I'm with 3 mobile.Maybe the having a machine that calls all combinations of numbers.....someone should shut them down!